.index_bg{background: url(../images/-login_bg.png) no-repeat fixed top;}

.container {
    display: table;/*让元素以表格形式渲染*/
    width: 400px;
    margin-top: 250px;

}
.content {
    display:table-cell;/*让元素以表格的单元素格形式渲染*/
    vertical-align: middle;/*使用元素的垂直对齐*/
    background: #ffffff;
    border-radius: 10px;
    padding: 15px 30px;
}
.content h2{font-size: 18px;color: #666;font-weight: normal;margin-bottom: 15px;}
input {outline: none;border: 0;padding: 0}
.input_group img{width: 15px;margin-top: -7px;}
.input_group{box-sizing: border-box;}
.input_group input{height: 38px;margin-right: 5px;}
.input_group .img_control{width: 40px;text-align: center}
.input_group.input-group-up{border-width: 1px 1px 0px 1px;border-style: solid;border-color: #e3e3e3;border-radius: 5px 5px 0 0;height: 40px;line-height: 40px;}
.input_group.input-group-down{border-width: 1px;border-style: solid;border-color: #e3e3e3;border-radius: 0px 0px 5px 5px;height: 40px;line-height: 40px;}
.input_control{font-size: 12px;color: #999;}
.input_control input{border-radius: 0}
.input_control label{font-size: 12px;color: #999;font-weight: normal}
.content .forget{font-size: 8px;color: #72D2F1;font-weight: normal;text-decoration: none}
.content .btn{width: 100%;height: 40px;background: #72D2F1;line-height: 40px;color: #ffffff;padding: 0;font-size: 18px;margin-bottom: 10px;border-radius: 10px;margin-top: 15px;}








